sim/ppc/tree.h

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, see <http://www.gnu.org/licenses/>.
  17
  18     */
  19
  20
  21 #ifndef _TREE_H_
  22 #define _TREE_H_
  23
  24 #ifndef INLINE_TREE
  25 #define INLINE_TREE
  26 #endif
  27
  28 /* Constructing the device tree:
  29
  30    The initial device tree populated with devices and basic properties
  31    is created using the function <<device_tree_add_parsed()>>.  This
  32    function parses a PSIM device specification and uses it to populate
  33    the tree accordingly.
  34
  35    This function accepts a printf style formatted string as the
  36    argument that describes the entry.  Any properties or interrupt
  37    connections added to a device tree using this function are marked
  38    as having a permenant disposition.  When the tree is (re)
  39    initialized they will be restored to their initial value.
  40
  41    */
  42
  43 EXTERN_TREE\
  44 (char*) tree_quote_property
  45 (const char *property_value);
  46
  47 EXTERN_TREE\
  48 (device *) tree_parse
  49 (device *root,
  50  const char *fmt,
  51  ...) __attribute__ ((format (printf, 2, 3)));
  52
  53
  54 INLINE_TREE\
  55 (void) tree_usage
  56 (int verbose);
  57
  58 INLINE_TREE\
  59 (void) tree_print
  60 (device *root);
  61
  62 INLINE_TREE\
  63 (device_instance*) tree_instance
  64 (device *root,
  65  const char *device_specifier);
  66
  67
  68 /* Tree traversal::
  69
  70    The entire device tree can be traversed using the
  71    <<device_tree_traverse()>> function.  The traversal can be in
  72    either pre- or postfix order.
  73
  74    */
  75
  76 typedef void (tree_traverse_function)
  77      (device *device,
  78       void *data);
  79
  80 INLINE_DEVICE\
  81 (void) tree_traverse
  82 (device *root,
  83  tree_traverse_function *prefix,
  84  tree_traverse_function *postfix,
  85  void *data);
  86
  87
  88 /* Tree lookup::
  89
  90    The function <<tree_find_device()>> will attempt to locate
  91    the specified device within the tree.  If the device is not found a
  92    NULL device is returned.
  93
  94    */
  95
  96 INLINE_TREE\
  97 (device *) tree_find_device
  98 (device *root,
  99  const char *path);
 100
 101
 102 INLINE_TREE\
 103 (const device_property *) tree_find_property
 104 (device *root,
 105  const char *path_to_property);
 106
 107 INLINE_TREE\
 108 (int) tree_find_boolean_property
 109 (device *root,
 110  const char *path_to_property);
 111
 112 INLINE_TREE\
 113 (signed_cell) tree_find_integer_property
 114 (device *root,
 115  const char *path_to_property);
 116
 117 INLINE_TREE\
 118 (device_instance *) tree_find_ihandle_property
 119 (device *root,
 120  const char *path_to_property);
 121
 122 INLINE_TREE\
 123 (const char *) tree_find_string_property
 124 (device *root,
 125  const char *path_to_property);
 126
 127
 128 /* Initializing the created tree:
 129
 130    Once a device tree has been created the <<device_tree_init()>>
 131    function is used to initialize it.  The exact sequence of events
 132    that occure during initialization are described separatly.
 133
 134    */
 135
 136 INLINE_TREE\
 137 (void) tree_init
 138 (device *root,
 139  psim *system);
 140
 141
 142 #endif /* _TREE_H_ */